Ship-ventilator



UNITED sTATEs PATENT oEEIoE.

ERNEST BAHR, OF ROCHESTER, INDIANA.

SHIP-VENTILATOR.

Specification of Letters Patent No. 12,992, dated June 5, 1855.

To all whom t may concern Be it known that I, ERNEST BAHR, of Rochester,in the county of Fulton and State of Indiana, have invented a new andImproved Ship-Ventilator; and I do hereby declare that the following isa full, clear,

and exact description of the same, reference being had to the annexeddrawings, making a part of this specification, in which- Figure 1, is aside view of my improvement certain portions of the helical tube beingbisected in order to show t-he valves and guard plates therein. Fig. 2,is a small transverse section of a vessel showing the connection of theimprovement to an inverted conical funnel underneath the deck.

Similar lett-ers of reference indicate corresponding parts in the twofigures.

This invention relates to a new and improved ship ventilator, andconsists in placing within a helical tube a series of valves and guardsarranged as will be presently shown and described.

A represents a helical tube formed of two coils (a) (b), one of which(b) is connected to a horizontal tube B underneath the deck C of thevessel. The end of the other coil (a) extends upward and then passesdownward and terminates in a. fork or two ends D, E, one of which D isso arranged as to turn so that it may be made to face the wind. deck O.The end D is in a vertical position and the end E is in an inclinedposition not diiering very much from a horizontal position. The coils(a) (b) may be about two and a half feet in diameter and the tubing of aproper diameter.

The lower p-art of the end D terminates in a small rect-angular chamber(c) and has a valve (CZ) attached to it opening downward, see Fig. l,and a short distance above the valve (CZ) there is secured within thetube a guard plate (e) which is in an inclined or oblique position andextends nearly across the tube leaving a space sutiicient for the air topass through. The outer end of the part Elias also a. rectangularchamber (f) att-ached to it, having a wind wheel (g) at its outer endand a. covering of wire cloth (Zt). At the end of the tube there isattached a valve (i) opening outward and supported by a prop (j).Between the valve (2') and wind wheel (g) within the The two ends D, E,being above the` chamber (f) there is an inclined guard plate 7c) whichextends downward within a short distance of the bottom of the chamber(f), and at the joint or elbow ofthe tube there is a guard plate (Z).

On the vertical portion Iof the coil (a) there is placed a rectangularchamber (m) which communicates with the tube or coil (a) the tubepassing into its upper and lower ends, the lower end or portion of thetube having two iiap valves placed over it which valves work between afork at the lower end of a detached tube E within the chamber (m) andthe end of the tube (a). The upper end of the detached tube E, and theend of the tube (a) has a valve (0) fitted between them. l/Vithin thecoil (a), its circular part, there is a valve also placed within a`rectangular chamber (g) similar to the other above mentioned.

One or more helixes A may be attached to the deck O, and communicate.with the horizontal tube B underneath the deck, said tube having aninverted funnel shaped discharge opening F, see Fig. 2.

rIhe air enters the endsof the chambers (c), (f) a hole being made inthe lower end of the chamber (c). The wheel (g) rotates and gives adraft, or impetus, to t-he current. The air passes around the guardplate (7c) and valve (i) and into the tube (ai) and then around theguard plate (Z) and so o-n around all the valves and plates abovedescribed and enters the tube B and is discharged into the vesselthrough the discharge opening F.

The above invention is designed to prevent water from entering thevessel through the ventilator, while air is admitted. This is importantbecause the decks are often sweptover by the waves. Now if the water isforced up in the end D it will probably close the valve (d), or if anyescapes through it will be checked by the guard plate (e). The sameei'ect will be obtained by the. water entering the end E, the guardplate (7s) and valve obstructing its ent-rance into the tube (a), butstill if it should pass up the vertical portion of the tube (a) thereare two valves (a) (a) to check or prevent its ent-rance into the tube Eand the water will flow back through side .apertures (1') (7') into thevertical part of the tube (a). The same obstruction is presented to ofcork or other light substance so as to be easily acted upon by theWater.

Vhat I claim as new and desire to secure by Letters Patent, is-

The helical tube A provided With Valves (o) and guard plates (l) (e) asherein shown. One end of the helix terminating above the deck C in t-Woparts D, E, the part E being provided With a Wire Wheel (g) and WireCloth covering (IL), said part E being movable so that it may be turnedto face the Wind at all times, for the purpose set forth.

ERNEST BA1-IR.

Witnesses:

LUNEY KEITH, W. H. SLooUM.

